group of people participating in what appears to be a martial arts training session in a gym

group of people participating in what appears to be a martial arts training session in a gym. The gym has a blue floor with yellow and black lines marking boundaries. The walls are light-colored with large windows near the ceiling. The ceiling has wooden beams. In the foreground, a pair of individuals are engaged in sparring, one wearing red shin guards and the other wearing black padding on their lower legs. They are wearing black shirts with a white logo. Other individuals in similar attire are practicing in the background. An adult man can be seen observing in the background.